Bananas have several healthy vitamins like vitamins C and B-6. They also deliver on carbohydrates, protein, fiber and magnesium. But the thing bananas are most known for, is one of the best things for your heart: Potassium.
Potassium helps to lower blood pressure by balancing out the negative effects of salt. Salt retains water, which can be problematic if your kidneys cannot get rid of it. The more fluid you have in your body, the higher your blood pressure will be.